see more

Costa Rican President, Laura Chinchilla (C) receives directions for a detonation from workers of the Costa Rican Electricity Institute (ICE in Spanish) in one of two tunnels dug to change the course of the Reventazon River, as part of a hydroelectric project in Siquirres, 95 kilometers south of San Jose, on April 7, 2011. Chinchilla shouted 'fire' when she pushed the button that triggered a huge explosion Thursday, designed to connect two tunnels under construction for future hydropower plant. AFP PHOTO/ Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/Getty Images)

Costa Rican President, Laura Chinchilla (C) receives directions for a detonation from workers of the Costa Rican Electricity Institute (ICE in Spanish) in one of two tunnels dug to change the course of the Reventazon River, as part of a hydroelectric project in Siquirres, 95 kilometers south of San Jose, on April 7, 2011. Chinchilla shouted 'fire' when she pushed the button that triggered a huge explosion Thursday, designed to connect two tunnels under construction for future hydropower plant.    AFP PHOTO/ Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/Getty Images)